- Jorge Cássio
Decomposition (To decompose figures can mean the separation of a shape into two or more onoverlapping shapes)
Move the "spin" bar, varying it between 0º and 180º.
When the spin bar is at 0º, which figure do you get?
When the "spin" bar is at 180º. Which figure do you get? Is the area of the new figure the same as the previous one? Why? Check the "show cut" box.